This attempts to use bio_clone_fast() in the places where we clone bio, such as when bio got cloned for multiple disks and when bio got split during dio submit.
One benefit is to simplify dio submit to avoid calling bio_add_page one by one. Another benefit is that comparing to bio_clone_bioset, bio_clone_fast is faster because of copying the vector pointer directly, and bio_clone_fast doesn't modify bi_vcnt, so the extra work is to fix up bi_vcnt usage we currently have to use bi_iter to iterate bvec. Liu Bo (6): Btrfs: use bio_clone_fast to clone our bio Btrfs: use bio_clone_bioset_partial to simplify DIO submit Btrfs: change how we iterate bios in endio Btrfs: record error if one block has failed to retry Btrfs: change check-integrity to use bvec_iter Btrfs: unify naming of btrfs_io_bio fs/btrfs/check-integrity.c | 27 +++--- fs/btrfs/extent_io.c | 18 +++- fs/btrfs/extent_io.h | 1 + fs/btrfs/file-item.c | 31 ++++--- fs/btrfs/inode.c | 203 ++++++++++++++++++++------------------------- fs/btrfs/volumes.h | 1 + 6 files changed, 138 insertions(+), 143 deletions(-) -- 2.5.5 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
